Arm assembly



FIG. 1 is a perspective view of an arm assembly embodying the present invention;

FIG. 2 is a front view of the arm assembly;

FIG. 3 is a first side view of the arm assembly;

FIG. 4 is a second side view of the arm assembly;

FIG. 5 is a rear view of the arm assembly;

FIG. 6 is a top view of the arm assembly; and,

FIG. 7 is a bottom view of the arm assembly.

The broken lines shown in the drawing are for illustrative purposes only and form no part of the claimed design. 

CLAIM We claim the ornamental design for the arm assembly, as shown and described. 